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An Islanding Detection Strategy For Distribution Network Connected With Hybrid Dg Resources May 2015

An Islanding Detection Strategy For Distribution Network Connected With Hybrid Dg Resources

Faculty of Engineering University of Malaya

The exponential growth in electricity demand has driven the Distributed Generation (DG) technology a boost in the power system. The use of DG is beneficial to power utilities, DG owners', and end-users in terms of reliability, power quality, and economics. However, to fully utilize the benefits of DGs, some technical issues need to be addressed. Islanding condition is one of the most important issue in this context. Until now, several islanding detection techniques have been proposed for detecting the islanding condition. This paper presents a brief overview of existing islanding detection techniques with their relative merits and demerits. Apart from …

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Development Of Stability Protection Framework In Oman Electricity Transmission System, Omar H. Abdalla, Thani Al-Khusaibi, Adil Al-Batashi, Anil Kumar, A. Svalovs, P. Watson, I. Svalovs Apr 2012

Development Of Stability Protection Framework In Oman Electricity Transmission System, Omar H. Abdalla, Thani Al-Khusaibi, Adil Al-Batashi, Anil Kumar, A. Svalovs, P. Watson, I. Svalovs

Omar H. Abdalla

This paper discusses potential extreme scenarios which could result in unstable conditions on the main interconnected electricity transmission system of Oman. Case studies on loss-of-stability scenarios between different parts of the network are examined. The objectives of the study are to identify possible locations of the electrical centre of swing and to develop an approach for controllable system splitting. A controllable splitting approach has been proposed and sensitivity analysis has been utilised to identify potential locations for controllable system splitting. In the final recommendations, trade-off considerations should compare the introduction of a system-wide out-of-step protection framework and its associated potential …

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Emp Protection Validation Testing Approaches, George H. Baker Jan 1991

Emp Protection Validation Testing Approaches, George H. Baker

George H Baker

Integrated, operational system-level testing is required for confidence in any system's EMP hardness. Validation is not possible by analysis or inspection. Test capabilities exist to validate the EMP protection of properly designed systems. High-level free field simulators are the means of choice for testing aircraft and ground mobile systems. A combination of low level continuous wave and pulsed current injection testing are preferred for testing fixed facilities and systems connected to long line networks.

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